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JEE Main 2014 Mathematics question

MathematicsEllipseJEE Main 2014

If OB is the semi-minor axis of an ellipse, and are its focii and the angle between and is a right angle, then the square of the eccentricity of the ellipse is

Answer: (3)

Solution

Take B(0, b) and the foci . The vectors and are perpendicular when their dot

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Question ID VK-104417